Formatt Hitech 80A Color Conversion Filter (105mm)

Formatt Hitech 80A Color Conversion Filter (105mm)

Formatt Hitech 80A Color Conversion Filter (105mm)

B&H # FO80A105 MFR # BF 105-CTC80A
Formatt Hitech 80A Color Conversion Filter (105mm)

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Product Highlights

  • Balances Daylight Under Tungsten
  • Schott Glass
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Formatt Hitech BF 105-CTC80A overview

  • 1Description

The Formatt 105mm 80A Color Conversion Filter is blue. It is used to balance daylight film under artificial, tungsten or standard (household) incandescent lighting.

Let's say you're at a family gathering and you've brought your camera and want to take some photos of this once-a-year gathering. You have traditional daylight balanced film but find yourself in a room filled with table lamps. If left unfiltered, your photos will turn out yellowish. Under certain circumstances, perhaps a nice effect but not flattering in terms of skin tones or what our eyes are used to seeing or expecting. Enter the 80A filter!...

This filter allows you to "balance", i.e. bring back, correct color tone to your images. There is some loss of film speed that may require the use of a tripod but, at least, your photos will demonstrate the proper tonality they so richly deserve.

80 Series Conversion Chart

80A increases color temperature from 3200-5500K (commonly used with 3200K lamps)
80B increases color temperature from 3400-5500 K (commonly used with photoflood lamps)
80C increases color temperature from 3800-5500K (commonly used with flashbulbs)
80D increases color temperature from 4100-5500K (commonly used to remove extreme orange or red)

Absorbing Cell Technology

The secret to Formatt's consistency in filter design lies in its unique "Absorbing Cell Technology" (A.C.T.); this unique process allows color correct dyes to be applied to optically pure, wafer thin absorbing cells and offers a controllability that ensures the smoothest grad lines and consistent color across the whole filter surface.
This process is revolutionary compared with conventional filter dying techniques by eliminating the need to directly coat the glass surface itself. The repeatable performance gained through A.C.T. ensures that at any time you have to swap like filters for like filters mid shoot, you can do so with confidence with no discernible differences in color or density.
Each filter is guaranteed flatness to a maximum 2-wave value and comes with an individual reading from a laser interferometer. Every filter is carefully verified with a densitometer and spectrophotometer to ensure consistent and accurate transmission, before leaving the factory - the result is an absolute purity of image that eliminates any unwanted colorcast caused by conventional greenish soda-lime glass.
UPC: 886235117313
In the Box
Formatt Hitech 80A Color Conversion Filter (105mm)
  • One-Year Warranty
  • Table of Contents
    • 1Description

    Formatt Hitech BF 105-CTC80A specs

    Type Color Conversion
    Size 105mm
    Grade 80A
    Filter Factor 2 (+1 stop)
    Multi-Coated Not Applicable
    Rotating Not Applicable
    Effect Balances daylight film for use with most standard tungsten lighting, studio lighting and copy stand lighting
    Application Used to shoot daylight film under artificial (household) lighting conditions
    Color Temperature Increases color temperature from 3200-5500K (commonly used with 3200K lamps)
    Construction Schott-Desag B270 Crown Optical Glass
    Front Filter Thread Size 105mm
    Front Lens Cap Size Not Applicable
    Packaging Info
    Package Weight 0.3 lb
    Box Dimensions (LxWxH) 2.0 x 2.0 x 2.0"

    Formatt Hitech BF 105-CTC80A reviews

    80A Color Conversion Filter (105mm) is rated 3.0 out of 5 by 1.
    Rated 3 out of 5 by from Wish it had front accessory threads Purchased a Formatt-Hitech 105mm 80A filter (Mfr #BF105-CTC80A). What arrived is labelled 105mm CDFN 3 (i.e. Cool Day-for-Night 3) on the filter ring. I also ordered a real Formatt-Hitech 105mm Cool Day-for-Night 3 filter at the same time (Mfr # BF105-3-COOLD, which arrived damaged, in the same shipment; see my review for that item). Since they arrived together, this labelling SNAFU was a bit confusing. For a while there, it appeared I had received two CDFN3 filters, one of them damaged. But while a real CDFN does not function anything like an 80A (generates an insufficient change in color temperature), the mislabelled 80A functions correctly as an 80A (measured with a color meter) and the real CDFN filter has a pronounced lavender cast (by design for Formatt-Hitech's CDFN formulation) which very easily differentiates it visually from the 80A (regardless of the label on the filter ring). In addition, while Formatt-Hitech screw-in glass filters are described as possessing a front accessory thread, even if there are threads present, there is not enough thread depth for anything to screw in. Feeling curious, measuring comparable 77mm filters (I don't have any 105mm Tiffen filters), Formatt-Hitech's filter ring stack height measures 4.5mm, and Tiffen's measures 4.8mm. Formatt-Hitech foregoes front accessory threads to save 0.3mm in stack height? This is inexplicable and frustrating. Right now, I have no intention of ever purchasing any more Formatt-Hitech screw-in glass filters. This 80A looks like a good product, but the mislabelling on the filter ring is unhelpful and the lack of functioning front accessory threads is an actual sticking point.
    Date published: 2017-11-06
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    Formatt Hitech BF 105-CTC80A Q&A

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